Hot Tub & Spa - Heater Unions, Collars & Small Parts

In this section you will find sensors and small parts including heater o-rings and gaskets. Suitable for all major branded heaters and spas.

See also:  
Low Flow Heaters    
Heater Elements   
Flow Thru Heaters 

Helpful Artical: 
Replacing a Balboa Heater

Unsure what replacement part you need? Send us an image of your part

In this section you will find sensors and small parts including heater o-rings and gaskets. Suitable for all major branded heaters and spas.

See also:  
Low Flow Heaters    
Heater Elements   
Flow Thru Heaters 

Helpful Artical: 
Replacing a Balboa Heater

Unsure what replacement part you need? Send us an image of your part

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Spares Available
  • HydroQuip Heater Tailpiece
  • 1.5" (Socket)
  • White
  • PVC Plastic
In stock 10 in stock
In stock Same day dispatch on orders before 15:00
£5.40
Saving: £2.40
  • HydroQuip Heater Tailpiece
  • 1.5" (Spigot/Male)
  • White
  • PVC Plastic
In stock 10 in stock
In stock Same day dispatch on orders before 15:00
£2.49
Saving: £0.33
  • Balboa Heater Gasket
  • Centre Bead
  • 2.0" Inch (74mm OD)
  • Suitable for Heater & Pump Unions
In stock 298 in stock
In stock Same day dispatch on orders before 15:00
In stock More stock (100) due on 26/10/2020
£1.99
 
  • Balboa Heater Union Collar
  • Fits 2" Balboa Heaters
  • Black PVC
In stock 7 in stock
In stock Same day dispatch on orders before 15:00
£5.99
Saving: £1.00

 

  • Balboa M7 Sensor
  • 30cm Cable Length
  • Suitable for GS/GL Spa Packs
  • 53605

  • » Find out more
    In stock 14 in stock
    In stock Same day dispatch on orders before 15:00
    £23.99
    Saving: £5.68
    12 Inch Cable
    Inc. Nut & Washer
    6mm Dia. Probe
    • Barb 3/4" Kit with o-rings
    • Fits Watkins Double Barrel Heater (No Fault Heater)
    In stock 4 in stock
    In stock Same day dispatch on orders before 15:00
    £38.50
    Saving: £7.70

    Spare Part for 

    • Hydroquip Double Barrel Heater




    In stock 2 in stock
    In stock Same day dispatch on orders before 15:00
    £7.73
    Saving: £1.55
    • Gasket Kit (4 Pieces)
    • Fits Watkins Double Barrel Heater (No Fault Heater)
    Available for Pre Order Available for Pre Order
    Available for Pre Order Estimated Dispatch 14 Days
    Available for Pre Order More stock (8) on order
    £12.00
    Saving: £3.65

     

    • Gasket
    • 1.5" inside diameter
    • Suitable for Heaters
    In stock 49 in stock
    In stock Same day dispatch on orders before 15:00
    £1.99
     
    • Balboa Gasket
    • With Centre Bead
    • 1.5" / 38mm inside diameter
    • 60mm outside diameter
    In stock 49 in stock
    In stock Same day dispatch on orders before 15:00
    £1.99
     

     

  • HydroAir Heater Tailpiece
  • Metric 50mm I/D
  • Grey
  • In stock Out of Stock
    £5.99
    Saving: £1.00
    • HydroQuip Heater Tailpiece
    • 1.0" (Socket)
    • White
    • PVC Plastic
    In stock 10 in stock
    In stock Same day dispatch on orders before 15:00
    £1.99
    Saving: £0.51
    • HydroQuip Heater Tailpiece
    • 2.0" (Socket Short)
    • White
    • PVC Plastic
    In stock 9 in stock
    In stock Same day dispatch on orders before 15:00
    £2.49
    Saving: £0.41
    • HydroQuip Heater Tailpiece
    • 2.0"(Spigot/Male Short)
    • White
    • PVC Plastic
    In stock 10 in stock
    In stock Same day dispatch on orders before 15:00
    £9.00
    Saving: £2.40
    • HydroQuip Heater Tailpiece
    • 2.0" Thread x 1.5" Socket
    • White
    • PVC Plastic
    In stock 6 in stock
    In stock Same day dispatch on orders before 15:00
    In stock More stock (4) due on 15/10/2020
    £8.09
    Saving: £3.31
    • HydroQuip Heater Tailpiece
    • 2.0 " Thread x 2.0" Spig /1.5" Soc
    • White
    • PVC Plastic
    In stock 5 in stock
    In stock Same day dispatch on orders before 15:00
    £10.07
    Saving: £1.33
    Heater Tailpiece 2.0"
    2.0" Thread
    2.0" Spig /1.5" Soc
    • HydroQuip Heater Tailpiece 2.00"
    • 1" 90 Degree Barb
    Out of stock Out of Stock
    Email me when back in stock
    £7.99
    Saving: £3.34
    • HydroQuip Heater Tailpiece 2.00" 
    • 3/4" 90 Degree Barb
    In stock 7 in stock
    In stock Same day dispatch on orders before 15:00
    £7.99
    Saving: £2.57
    • HydroQuip Heater Tailpiece 3.00" 
    • 3/4"  90 Degree Barb
    In stock 18 in stock
    In stock Same day dispatch on orders before 15:00
    £4.99
     
    • HydroQuip Heater Union Nut & Retainer 
    • 2.00"
    In stock 10 in stock
    In stock Same day dispatch on orders before 15:00
    £17.75
    Saving: £2.65
    • HydroQuip Heater Union Nut & Retainer
    • 3.00 "
    In stock 17 in stock
    In stock Same day dispatch on orders before 15:00
    £7.79
    Saving: £7.21
    • Split Nut for Heater Union
    • 1.5" 
    • Supplied with screws
    In stock 6 in stock
    In stock Same day dispatch on orders before 15:00
    £7.86
     
    • Split Nut for Heater Union
    • 2.0" 
    • Supplied with screws
    In stock 3 in stock
    In stock Same day dispatch on orders before 15:00
    In stock More stock (6) due on 15/10/2020
    £8.26
    Saving: £3.14
    • HydroQuip Heater Union Nut & Retainer 
    • 1.50 "
    Awaiting delivery Out of Stock
    Email me when back in stock
    Awaiting delivery More stock (10) due on 15/10/2020
    £16.22
    Saving: £4.18

     

    • Suitable for In.clear & In.Therm
    • Includes required screws
    • Black Finish
    In stock 2 in stock
    In stock Same day dispatch on orders before 15:00
    £16.99
    Saving: £3.98
    • Pump Union Heat Stick
    • Generates Heat via Friction.
    • Connection type: Glued Female Socket.
    • Connection Size: 1.5" (48mm)
    In stock 1 in stock
    In stock Same day dispatch on orders before 15:00
    £25.49
    Saving: £6.19
    • HydroQuip Replacement Kit
    • Hi-Limit Sensor, Temperature sensor & o-rings
    • Fits : Watkins Double Barrel Heater (Watkins NO Fault)
    In stock 1 in stock
    In stock Same day dispatch on orders before 15:00
    In stock More stock (1) due on 15/10/2020
    £35.12
     

     

    • Spa-Quip Auto Reset Klixon
    • Suitable for All Spa-Quip Heaters
    • Power: 12vac
    In stock 6 in stock
    In stock Same day dispatch on orders before 15:00
    £5.49
    Saving: £0.43

     

    • Spa-Quip Heater Union
    • Single Unit
    • Suitable for SP600/SP601/SP800/SP1200
    In stock 4 in stock
    In stock Same day dispatch on orders before 15:00
    £29.49
    Saving: £9.41
    • Spa-Quip O-Ring
    • 13mm O/D x 2mm Thickness
    • Suitable for Spa-Quip Optical Water Sensor
    In stock 10 in stock
    In stock Same day dispatch on orders before 15:00
    £0.99
     

     

  • Split nut union
  • 2.00" inch size
  • Supplied with screws
  • In stock 12 in stock
    In stock Same day dispatch on orders before 15:00
    In stock More stock (2) due on 02/10/2020
    £2.99
    Saving: £0.78

     

    • Split nut union
    • 1.5 inch size
    • Supplied with screws
    In stock 15 in stock
    In stock Same day dispatch on orders before 15:00
    £3.49
    Saving: £0.56

     

    • Split Nut Heater Union
    • 2.0" O/D
    • For Balboa Heater Units
    In stock 23 in stock
    In stock Same day dispatch on orders before 15:00
    £5.99
    Saving: £1.00
    • Waterway Flat Gasket
    • 2.00" O/D
    • White
    • Suitable for Heater Unions
    In stock 73 in stock
    In stock Same day dispatch on orders before 15:00
    £0.77
    Saving: £0.13
    • Waterway Flat Gasket
    • 60mm OD x 2.5mm Thickness
    • White
    In stock 50 in stock
    In stock Same day dispatch on orders before 15:00
    £0.65
    Saving: £0.11
    • Waterway Gasket
    • Centre Bead
    • Suitable for Heater & Pump Unions
    In stock 57 in stock
    In stock Same day dispatch on orders before 15:00
    £0.65
    Saving: £0.11

     

    • Waterway Gasket
    • Flat/Bead Single Side
    • 60mm OD x 5.0mm
    In stock 15 in stock
    In stock Same day dispatch on orders before 15:00
    £0.99
     
    • Waterway Gasket - Centre Bead
    • Flat/Bead Single Side
    • 74mm OD x 5.0mm
    • 51mm ID
    • Suitable for Heater & Pump Unions
    In stock 210 in stock
    In stock Same day dispatch on orders before 15:00
    £0.82
    Saving: £0.15

     

  • Waterway Heater Tailpiece
  • 1.50" Socket
  • White
  • PVC Plastic
  • In stock 3 in stock
    In stock Same day dispatch on orders before 15:00
    £1.99
    Saving: £0.27

     

    • Waterway Heater Tailpiece
    • 2.00" Socket
    • White
    • PVC Plastic
    In stock 5 in stock
    In stock Same day dispatch on orders before 15:00
    In stock More stock (5) due on 15/10/2020
    £2.49
    Saving: £0.58

     

    • Waterway Heater Tailpiece
    • 2.00" Spigot
    • White
    • PVC Plastic
    In stock 5 in stock
    In stock Same day dispatch on orders before 15:00
    £2.49
    Saving: £0.51
    • Waterway O-Ring
    • 68mm OD x 2.5mm Thickness
    • Suitable for 2" Heater Unions & Pump Unions
    In stock 15 in stock
    In stock Same day dispatch on orders before 15:00
    £0.62
    Saving: £0.11
    • Waterway O-Ring
    • 76mm OD x 3.5mm Thickness
    • Suitable for 2.5" Pump / Heater Unions
    Awaiting delivery Out of Stock
    Email me when back in stock
    Awaiting delivery More stock (9) on order
    £1.36
    Saving: £0.24